Another idea is to use dates from the Opinions of the Press
section as important lectures Rowbotham gave with the appropriate newspaper snippit. It would provide good filler. Ie.--
On this day on May 19th, 1862, Rowbotham lectured at Greenwich University
"'PARALLAX' AT THE LECTURE HALL.--This talented lecturer is again in Greenwich, rivetting the attention of his audiences, and compelling them to submit to the facts which he brings before them--we say submit, for this they do; it seems impossible for any one to battle with him, so powerful are the weapons he uses. Mathematicians argue with him at the conclusion of his lectures, but it would seem as though they held their weapons by the blade and fought with the handle, for sure enough they put the handle straight into the lecturer's hand, to their own utter discomfiture and chagrin. It remains yet to be seen whether any of our Royal Astronomers will have courage enough to meet him in discussion, or whether they will quietly allow him to give the death-blow to the Newtonian theory, and make converts of our townspeople to his own Zetetic philosophy. If 'Parallax' be wrong, for Heaven's sake let some of our Greenwich stars twinkle at the Hall, and dazzle, confound, or eclipse altogether this wandering one, who is turning men, all over England, out of the Newtonian path. 'Parallax' is making his hearers disgusted with the Newtonian and every other theory, and turning them to a consideration of facts and first principles, from which they know not how to escape. Again we beg and trust that some of our Royal Observatory gentlemen will try to save us, and prevent anything like a Zetetic epidemic prevailing amongst us."--Greenwich Free Press, May 19th, 1862.